On this day: August 1

1957: The United States and Canada agree to form the North American Air Defense Command (NORAD). The joint organization would provide aerospace warning, air sovereignty and defense for the two countries and be headquartered at Peterson Air Force Base in Colorado Springs, Colorado.

Oxygen is discovered, Adolf Hitler presides over the opening of the Olympics, a new superhero is introduced, tragedy strikes the University of Texas, and a new all-music TV network debuts, all on this day.